Carboxymethylcellulose ammonium-derived nitrogen-doped carbon fiber/molybdenum disulfide hybrids for high-performance supercapacitor electrodes

In this paper, a new type of nitrogen-doped carbon fiber/molybdenum disulfide (N-CFs/MoS₂) hybrid electrode materials are prepared via a certain concentration in solvothermal synthesis followed by a high-temperature carbonization process and using the carboxymethylcellulose ammonium (CMC-NH₄) as a structure-directing agent for MoS₂ nanosheet growth during the solvothermal synthesis process. The addition of CMC-NH₄ effectively prevents the agglomeration of MoS₂ nanosheets to increase the specific surface area. Moreover, it not only serves as a carbon source to provide conductive pathways, but also introduces N atoms to improve the conductivity of the CFs and promote the transfer of electrons and ions. This ultimately increases the conductivity of the electrode materials. Thus, the as-prepared N-CFs/MoS₂ hybrids exhibit excellent electrochemical performance. The specific capacitance is up to 572.6 F g⁻¹ under a current density of 0.75 A g⁻¹ and the specific capacitance retained 98% of the initial capacitance after 5000 cycles of charge–discharge tests at a current density of 2.5 A g⁻¹. Moreover, the hybrids show a maximum energy density of 19.5 W h kg⁻¹ at a power density of 94 W kg⁻¹. Therefore, the as-prepared N-CFs/MoS₂ hybrids with remarkable electrochemical properties, low cost and environment protection show potential for practical application in the development of high-performance electrochemical energy storage devices.

Novel CMC-NH₄-derived nitrogen-doped CFs/MoS₂ hybrid electrode materials are prepared using CMC-NH₄ as a structure-directing agent for MoS₂ nanosheets.     

The Association of Socioeconomic Status and Discharge Destination with 30-Day Readmission after Ischemic Stroke

ObjectivesThis study aimed to explore the association of socioeconomic status and discharge destination with 30-day readmission after ischemic stroke.Materials and MethodsWe examined 30-day all-cause readmission among patients hospitalized for ischemic stroke in states of Arkansas, Iowa, and Wisconsin in 2016 and 2017 and New York in 2016 using Healthcare Cost and Utilization Project (HCUP) State Inpatient Databases.ResultsAmong the 52301 patients included, 51.1% were female. The 30-day readmission rates were 10.2%, 8.2%, 9.3%, 10.4%, 11.6%, and 11.2% for age group 18-34, 35-44, 45-54, 55-64, 65-74, and ≥75 years, respectively (p<0.001). In Generalized Estimating Equation analysis, patients with Medicare and Medicaid insurance were more likely to be readmitted, compared with private insurance, (adjusted Odds Ratio [aOR] 1.37, 95% CI 1.23-1.53; and aOR 1.26, 95% CI 1.09-1.45, respectively). Patients in the bottom quartile of zip code level median household income had higher 30-day readmission rate (12.4%) than those in the 2nd, 3rd and 4th quartile (10.3%, 10.1%, and 10.7%, respectively, p<0.001). Compared with those discharged home with self-care which had the lowest readmission rate (8.4%), patients who left against medical advice had the highest readmission rate (18.6%; aOR 2.23, 95% CI 1.75-2.83), followed by rehabilitation and skilled nursing facilities (13.2%; aOR 1.33, 95% CI 1.22-1.46), and home with home health care (11.3%, aOR 1.18, 95% CI 1.08-1.28).ConclusionsSocioeconomic status and discharged destination affect readmission after stroke. These results provide evidence to inform vulnerable patient population as targets for readmission prevention.     

血清补体C1q/肿瘤坏死因子相关蛋白3水平与糖尿病合并脂肪肝患者颈动脉粥样硬化的相关性

目的探讨补体C1q/肿瘤坏死因子相关蛋白3(C1q/tumour necrosis factor-related protein-3,CTRP3)与2型糖尿病(type 2 diabetes mellitus,T2DM)合并非酒精性脂肪肝(non-alcoholic fatty liver disease,NAFLD)患者颈动脉粥样硬化的相关性。方法采用回顾性分析方法,选取2018年1月至2019年12月在南通大学附属南通第三人民医院内分泌科住院的T2DM患者111例及同期在南通大学附属南通第三人民医院体检中心健康体检者30名。健康体检者30名为对照组,T2DM患者111例根据是否合并NAFLD分为T2DM组52例,T2DM+NAFLD组59例。采用横断面研究方法,收集3组相关临床资料,多组间比较数据符合正态分布且方差齐采用单因素方差分析,两两比较采用SNK-q检验,定性资料比较用χ2检验,颈动脉内中膜厚度(carotid intima-media thickness,IMT)与影响因子的相关性采用偏相关性分析,采用多因素线性回归分析颈动脉IMT的影响因素。结果对照组、T2DM组和T2DM+NAFLD组3组间体质量指数(body mass index,BMI)分别为(23.65±2.81)、(25.52±3.12)、(24.90±2.94)kg/m2,收缩压分别为(119.43±15.81)、(130.63±10.20)、(139.37±14.11)mmHg,舒张压(72.93±9.74)、(73.40±9.44)、(77.97±10.00)mmHg,空腹血糖分别为(5.12±0.77)、(9.78±1.37)、(9.24±1.46)mmol/L,糖化血红蛋白(glycosylated hemoglobin,HbA1c)分别为(4.87±1.43)%、(7.99±1.10)%、(8.56±1.29)%,胰岛素抵抗指数(homeostasis model assessment of insulin resistance,HOMA-IR)分别为1.56±0.37、2.80±1.00、3.47±0.94,高密度脂蛋白胆固醇(high density lipoprotein cholesterol,HDL-C)分别为(1.52±0.34)、(1.23±0.31)、(1.22±0.31)mmol/L,低密度脂蛋白胆固醇(low density lipoprotein cholesterol,LDL-C)(2.41±0.53)、(2.73±0.61)、(2.93±0.59)mmol/L,CTRP3分别为(292.93±68.54)、(241.69±61.01)、(150.80±56.67)μg/L,组间比较差异均有统计学意义(F值分别为3.712、23.023、4.074、134.285、90.818、47.105、10.139、7.941、60.035,P均<0.05)。两两比较T2DM+NAFLD组收缩压、舒张压、HbA1c、HOMA-IR均高于对照组和T2DM组,CTRP3低于对照组和T2DM组,差异均有统计学意义(P均<0.05)。T2DM组BMI、空腹血糖、HbA1c、HOMA-IR、HDL-C、LDL-C均高于对照组,CTRP3低于对照组,差异均有统计学意义(P均<0.05)。对照组、T2DM组和T2DM+NAFLD组3组间IMT分别为(0.75±0.13)、(1.11±0.17)、(1.25±0.15)cm,Crouse积分分别为(1.28±0.97)、(3.22±1.42)、(4.54±1.22),斑块检出率分别为16.7%(5/30)、65.4%(34/52)、78.0%(46/59),组间比较差异均有统计学意义(F分别为105.941、67.063,χ^(2)=32.108,P均<0.001)。两两比较差异均有统计学意义(P均<0.05),T2DM+NAFLD组最高,其次为T2DM组,对照组最低。偏相关分析显示颈动脉IMT与收缩压、空腹血糖、HbA1c、HOMA-IR、甘油三酯、LDL-C均呈正相关(r值分别为0.356、0.572、0.575、0.620、0.172、0.291,P均<0.05),与HDL-C、CTRP3呈负相关(r值分别为-0.335、-0.675,P均<0.001)。多因素线性回归分析显示HbA1c、HDL-C、CTRP3均是颈动脉粥样硬化的影响因素(t值分别为2.621、-3.764、-7.280,P均<0.05)。结论血清CTRP3与T2DM合并NAFLD患者的颈动脉粥样硬化相关,可能对T2DM合并NAFLD患者的血管病变有保护作用。     

牙科硅藻土基纳米复相陶瓷烧结曲线的研究

目的:探讨牙科硅藻土基纳米复相陶瓷的烧结致密化速率、不同烧结制度对其力学性能及显微结构的影响。方法:采用热膨胀仪检测样品的收缩率曲线及烧结微分曲线,以此为依据,不同温度段采取不同的烧结速率,测不同最高烧结温度下陶瓷烧结体的力学性能,SEM观察断面的显微结构。结果:烧结温度至1100℃时,其弯曲强度、维氏硬度和断裂韧性最佳,显著优于其它温度组(P<0.05),分别达到(207.45±8.00)MPa,(5.77±0.36)GPa,(3.04±0.40)MPa·m1/2。SEM显示陶瓷断面的气孔明显变小,致密度增大。结论:热膨胀曲线可检测陶瓷的烧结致密化过程,进一步实验验证证明1100℃为其最佳烧结温度。     

掌背动脉逆行岛状皮瓣修复手指掌侧软组织缺损的感觉功能随访研究

背景:目前临床对掌背动脉逆行岛状皮瓣的研究报道较多,随访着重在皮瓣的成活、外形质地、手指屈伸活动等方面,缺少对感觉恢复的系统测定。目的:观察掌背动脉逆行岛状皮瓣修复手指掌侧软组织缺损的感觉恢复情况。方法:回顾性分析2015年1月至2017年12月收治的采用掌背动脉逆行岛状皮瓣修复的手指掌侧软组织缺损患者22例,其中6例采用皮瓣内的掌背神经和指固有神经缝合。术后1、3、6、9、12、18、24个月随访患者深压痛觉、单丝触觉、两点辨别觉恢复情况。结果:所有患者均在止血带下顺利完成手术。术后20例皮瓣完全成活,2例皮瓣远端少部分坏死,经换药处理后愈合。随访时间24~30个月,平均(24.5±0.3)个月。术后1个月22例患者深压痛觉均恢复;末次随访感觉恢复评价达S3:3例,S2:18例,S1:1例,末次随访两点辨别觉测定均大于20mm。随访患者中最长一例随访30个月,末次随访感觉测定S3,两点辨别觉测定大于20mm。该例患者感觉恢复在术后18个月以后基本无变化。结论:掌背动脉逆行岛状皮瓣修复手指掌侧软组织缺损的深压痛觉在术后1个月就能恢复;感觉恢复能达到S3,达S3+困难;无法恢复两点辨别觉。对一些特殊行业、对指掌侧感觉要求较高的手指掌侧缺损患者慎重应用。     

某三级甲等医院2008～2013年传染病疫情上报数据分析

目的研究某三级甲等传染病医院疫情网络直报数据,为制订医院突发公共卫生事件预警及应急决策提供依据。方法采用描述性分析方法对2008～2013年南通市第三人民医院各类传染病的发病率、构成比（包括传染病历年报告情况、分类构成、主要发病构成、发病序位）以及发病时间分布等进行统计分析。结果 2008～2013年共上报各类传染病24种、18 325例,年报告数由2 123例增长到3 788例;传染病发病报告数以丙类为主,其中手足口病增长尤为显著;5～6月为该院传染病报告高峰。结论传染病发病报告病例数近几年明显增长,手足口病成为今后该院传染病防控重点,医院传染病防控工作需根据各种传染病流行特征有序开展。     

小脑顶核电刺激治疗小儿中枢性协调障碍的研究

目的：探讨小脑顶核电刺激治疗在小儿中枢性协调障碍康复治疗中的优势。方法选取2012年8月至2013年7月收治的84例中枢性协调障碍患儿随机分为观察组（42例）和对照组（42例）,对照组仅采用常规康复综合治疗,观察组在此基础上加用小脑顶核电刺激疗法,对两组患儿治疗后总有效率及Gesell发育量表动作能之发育商（DQ）进行比较。结果观察组显效率（83.33%）高于对照组（57.14%）,治疗后DQ评分观察组[（84.91±7.28）分]明显高于对照组[（71.97±5.74）分],差异均有统计学意义（P〈0.05）。结论常规康复治疗联合小脑顶核电刺激治疗小儿中枢性协调障碍疗效显著。